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CVE-2022-50396

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: net: sched: fix memory leak in tcindex_set_parms Syzkaller reports a memory leak as follows: ==================================…

Published Sep 18, 2025CWE-401EPSS 0.17%

Overview

CVE-2022-50396 is a medium-severity vulnerability. It was published on September 18, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

net: sched: fix memory leak in tcindex_set_parms

Syzkaller reports a memory leak as follows:

====================================

BUG: memory leak

unreferenced object 0xffff88810c287f00 (size 256):

comm "syz-executor105", pid 3600, jiffies 4294943292 (age 12.990s)

hex dump (first 32 bytes):

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

backtrace:

[<ffffffff814cf9f0>] kmalloc_trace+0x20/0x90 mm/slab_common.c:1046

[<ffffffff839c9e07>] kmalloc include/linux/slab.h:576 [inline]

[<ffffffff839c9e07>] kmalloc_array include/linux/slab.h:627 [inline]

[<ffffffff839c9e07>] kcalloc include/linux/slab.h:659 [inline]

[<ffffffff839c9e07>] tcf_exts_init include/net/pkt_cls.h:250 [inline]

[<ffffffff839c9e07>] tcindex_set_parms+0xa7/0xbe0 net/sched/cls_tcindex.c:342

[<ffffffff839caa1f>] tcindex_change+0xdf/0x

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/01d0d2b8b4e3cf2110baba9371c0c3d04ad5c77bRefgit.kernel.org/stable/c/18c3fa7a7fdbb4d21dafc8a7710ae2c1680930f6Refgit.kernel.org/stable/c/372ae77cf11d11fb118cbe2d37def9dd5f826abdRefgit.kernel.org/stable/c/399ab7fe0fa0d846881685fd4e57e9a8ef7559f7Refgit.kernel.org/stable/c/3abebc503a5148072052c229c6b04b329a420ecdRefgit.kernel.org/stable/c/53af9c793f644d5841d84d8e0ad83bd7ab47f3e0Refgit.kernel.org/stable/c/55ac68b53f1cea1926ee2313afc5d66b91daad71Refgit.kernel.org/stable/c/6c55953e232ea668731091d111066521f3b7719bRefgit.kernel.org/stable/c/7a6fb69bbcb21e9ce13bdf18c008c268874f0480Refgit.kernel.org/stable/c/7c183dc0af472dec33d2c0786a5e356baa8cad19

How CyberStrike helps

Frequently asked questions

What is CVE-2022-50396?

CVE-2022-50396 is a medium-severity vulnerability. It was published on September 18, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-50396?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-50396?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-50396?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-50396 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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